CN106007371B - Transparent float glass production method - Google Patents
Transparent float glass production method Download PDFInfo
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- CN106007371B CN106007371B CN201610334716.4A CN201610334716A CN106007371B CN 106007371 B CN106007371 B CN 106007371B CN 201610334716 A CN201610334716 A CN 201610334716A CN 106007371 B CN106007371 B CN 106007371B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/04—Opacifiers, e.g. fluorides or phosphates; Pigments
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Abstract
The present invention relates to transparent float glass production methods, float glass smelting kiln is sent by the way that quartz sand, aluminium oxide, soda ash, calcium carbonate, magnesium carbonate, microcrystalline glass powder, potassium nitrate, compound complementary color agent to be uniformly mixed, high temperature melting is carried out in float glass smelting kiln into melt, melt flows into work pool after clarifying and homogenizing, melt enters in molding molten tin bath from the chute in work pool, form band-like continuous glass sheets, it is annealed, be cut into transparent float glass.The transparent float glass production method solves the partially yellow defect of transparent float glass tone using compound complementary color agent and potassium nitrate is added in raw material of float glass by the faint yellow elimination in transparent float glass；Replace part raw material of float glass using microcrystalline glass powder, reduces the impurity and bubble in band-like continuous glass sheets, and reduce production cost.The transparent float glass visible transmission is than high, and transparency is good, non-variegation, and bubble, impurity content are few, and presentation quality is high.
Description
Technical field
The present invention relates to a kind of transparent float glass production methods, belong to glass manufacture technology field.
Background technique
Currently, the main production process of glass is float glass process, float glass and its product are widely used in building, communications and transportation
And each economic department, yield and purposes occupy status outstanding in various glasswares.With electronics, chemical industry, light industry,
The rapid development of the industries such as machinery and being growing more intense for market competition, it is higher and higher to glass product quality requirement, while industry
Also day is becoming tight for the energy and resource, therefore, shortens the development cycle, and optimizing process improves product quality, and reduction is produced into
This, it has also become the objective requirement that enterprise can be unbeaten in market competition.
For oxidation of impurities iron in float glass there are two kinds of chemical valence states, practical tone depends on total impurity iron content,
That is transparent glass tone when the mass ratio of di-iron trioxide and ferrous oxide content, ferrous oxide and total impurity iron is less than 28%
Can be partially yellow, by the well-known technique of current float glass, it is also difficult to solve the problems, such as that transparent glass tone is partially yellow, glass colour
It is partially yellow, and the vision of people is especially sensitive to yellow, this coated glass production more demanding to quality is extremely disadvantageous.It wants
Improve the light transmittance and whiteness of glass, it is necessary to reduce iron content in glass.Due to iron oxide in domestic production glass raw material
Content between 0.07~0.15%, therefore affect the presentation quality of float glass.For the whiteness and light transmission for improving glass
Rate mainly decolourizes to float glass, uses CeO2、As2O3And Sb2O3Equal substances mix oxidant NaNO as decolorising agent3,
The two cooperation makes Fe2+It is oxidized to Fe3+, the coloring to glass is reduced, that is, reduces green；But this method is easy to make float glass process
There is microvesicle in glass surface, and the presentation quality of float glass reduces.
Summary of the invention
The present invention is in view of the deficienciess of the prior art, provide transparent float glass production method, specific technical solution
It is as follows:
Transparent float glass production method, comprising the following steps:
Step 1: devitrified glass fragment processing
Devitrified glass fragment is cleaned to be sent into crusher after drying with dispenser and is crushed, ball in ball mill is re-fed into
It is milled into the microcrystalline glass powder that partial size is less than 0.5mm；
Step 2: mixing
By quartz sand, aluminium oxide, soda ash, calcium carbonate, magnesium carbonate, microcrystalline glass powder, potassium nitrate, compound complementary color agent according to matching
Square ratio weighs each component, and each component is sufficiently mixed, and obtains batch；
Step 3: molding is melted
Uniformly mixed batch is sent into float glass smelting kiln, high temperature melting Cheng Rong is carried out in float glass smelting kiln
Liquid, for fusion temperature at 1600~1610 DEG C, melt flows into work pool after clarifying and homogenizing in the float glass smelting kiln, clarification
Homogenization temperature is 1680~1690 DEG C, and melt enters in molding molten tin bath from the chute in work pool, forms band-like continuous glass sheets,
Band-like continuous glass sheets forming temperature in molten tin bath is 900~910 DEG C；Band-like continuous glass sheets are annealed, it is transparent to be cut into
Float glass.
As an improvement of the above technical solution, the quartz sand of batch in the step 2, aluminium oxide, soda ash, calcium carbonate,
Magnesium carbonate, microcrystalline glass powder, potassium nitrate, compound complementary color agent proportion be the quality of quartz sand: the quality of aluminium oxide: soda ash
Quality: the quality of calcium carbonate: the quality of magnesium carbonate: the quality of microcrystalline glass powder: the quality of potassium nitrate: the quality of compound complementary color agent
=(6355.6~6444.4): (64.8~87.2): (1778.1~1914.8): (1157.1~1314.3): (621.6~
688.8): (942~1018): (31.1~35.6): (0.876~0.92).
As an improvement of the above technical solution, the compound complementary color agent is by molybdenum trioxide, rhenium dioxide, cadmium oxide, dioxy
Change cerium, samarium sesquioxide and gadolinium sesquioxide, which are uniformly mixed, to be made, wherein the quality of molybdenum trioxide: the quality of rhenium dioxide: oxygen
The quality of cadmium: the quality of ceria: the quality of samarium sesquioxide: the quality of gadolinium sesquioxide=(4.9~5.7): (2.1
~2.8): (3.7~4.1): (12.6~13.9): (7.7~8.6): (5.2~5.8).
As an improvement of the above technical solution, the composition and weight percent of the microcrystalline glass powder are as follows: SiO2Content is
The 59Wt% of microcrystalline glass powder quality, Al2O3Content is the 7Wt%, B of microcrystalline glass powder quality2O3Content is devitrified glass silty
The 1Wt% of amount, CaO content are the 17Wt% of microcrystalline glass powder quality, and ZnO content is the 6.5Wt% of microcrystalline glass powder quality,
BaO content is the 4Wt%, Na of microcrystalline glass powder quality2O content is the 3.3Wt%, K of microcrystalline glass powder quality2O content is crystallite
The 2Wt% of glass powder quality, Fe2O3Content is the 0.2Wt% of microcrystalline glass powder quality.
As an improvement of the above technical solution, SiO in the quartz sand2Content is 92~93Wt% of quartz sand quality,
Fe in quartz sand2O3Content is 0.01~0.02Wt% of quartz sand quality.
Microcrystalline glass powder in the present invention not only has the function of reducing the viscosity of the melt of molten condition, crystallize in melt
When, part microcrystalline glass powder can rapidly be changed into the nuclei of crystallization of rule from molten condition, under the action of the nuclei of crystallization, so that
In melt other compositions can using the nuclei of crystallization as core, and adsorb the molybdenum element in compound complementary color agent, rhenium element, cadmium element,
The elements such as Ce elements, samarium element and gadolinium element, make it be uniformly dispersed, and closely surround the nuclei of crystallization.Also, microcrystalline glass powder is also
Have the effect of refining crystal grain, can reduce the viscosity and surface tension of melt, is not only conducive to removal impurity, after also reducing crystallization
The structural stress that band-like continuous glass sheets generate, can reduce the number of transparent float glass surface microvesicle to greatest extent
Amount turns convenient for subsequent rhenium element from high-valence state to lower valency so that band-like continuous glass sheets forming temperature in molten tin bath reduces
Become.
Re in the present invention4+Re is oxidized under the action of oxidant potassium nitrate7+, Re7+And Cd2+Help to enhance melt
Structural stability in crystallization.Potassium nitrate and microcrystalline glass powder cooperation, also have excellent glass fining agent effect, reduce glass
Glass fluid viscosity promotes bubble in melt to eliminate.
It, can be by Fe under the action of oxidant potassium nitrate2+It can be converted into Fe3+, and due to Re7+Oxidisability is strong, Yi Conggao
Valence state changes to lower valency, thus easily by remaining Fe2+It is continual to be oxidized to Fe3+；Crystallization front and back iron ion, molybdenum ion,
Rhenium ion, cadmium ion, cerium ion, samarium ion and gadolinium ion ionic valence condition variation and ion co-doped secondary color
The color of the transparent float glass is made to be rendered as that transparent water is crystalline, and green is eliminated with complementary color effect, it is seen that luminous transmittance
It improves.Wherein, when samarium ion, gadolinium ion and cerium ion codope, cerium ion can effectively by excitation energy pass to samarium from
Son and gadolinium ion, to improve the luminous efficiency of samarium ion and gadolinium ion.Fe3+Excitation energy effectively will be passed into molybdenum ion
And rhenium ion, Fe3+Interaction between molybdenum ion or rhenium ion weakens, Fe3+Luminous efficiency reduce.Also, Fe3+?
Molybdenum ion, rhenium ion, cadmium ion, samarium ion and gadolinium ion complementary color effect under, the yellow light in band-like continuous glass sheets is eliminated.
Beneficial effects of the present invention: it uses and adds compound complementary color agent and potassium nitrate in raw material of float glass for clear float
Faint yellow elimination in glass solves this partially yellow technical problem of transparent float glass tone, makes transparent glass in thickness
When for 6mm, visible transmission ratio is 87.2%~89.1%；Replace part raw material of float glass using microcrystalline glass powder, no
But the impurity and bubble in band-like continuous glass sheets are reduced, so that the bubble number in transparent float glass per ton is less than 29,
And the comprehensive utilization ratio of devitrified glass fragment is also improved, reduce production cost.The transparent float glass visible transmission ratio
Height, transparency is good, non-variegation, and bubble, impurity content are few, and presentation quality is high.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
Devitrified glass fragment is cleaned to be sent into crusher after drying with dispenser and is crushed, ball in ball mill is re-fed into
It is milled into the microcrystalline glass powder that partial size is less than 0.5mm；Wherein, the composition and weight percent of the microcrystalline glass powder are as follows: SiO2
Content is the 59Wt%, Al of microcrystalline glass powder quality2O3Content is the 7Wt%, B of microcrystalline glass powder quality2O3Content is crystallite glass
The 1Wt% of glass silty amount, CaO content are the 17Wt% of microcrystalline glass powder quality, and ZnO content is microcrystalline glass powder quality
6.5Wt%, BaO content are the 4Wt%, Na of microcrystalline glass powder quality2O content is the 3.3Wt%, K of microcrystalline glass powder quality2O contains
Amount is the 2Wt%, Fe of microcrystalline glass powder quality2O3Content is the 0.2Wt% of microcrystalline glass powder quality.
Weigh 4.9Kg molybdenum trioxide, 2.1Kg rhenium dioxide, 3.7Kg cadmium oxide, 12.6Kg ceria, tri- oxygen of 7.7Kg
Change two samariums, 5.2Kg gadolinium sesquioxide, is mixed and compound complementary color agent is uniformly made.
Weigh 6355.6Kg quartz sand, 64.8Kg aluminium oxide, 1778.1Kg soda ash, 1157.1Kg calcium carbonate, 621.6Kg carbon
The compound complementary color agent of sour magnesium, 942Kg microcrystalline glass powder, 31.1Kg potassium nitrate, 0.876Kg, is sufficiently mixed, obtains batch；Its
In, SiO in the quartz sand2Content is the 93Wt% of quartz sand quality, Fe in quartz sand2O3Content is quartz sand quality
0.01Wt%.Uniformly mixed batch is sent into float glass smelting kiln, high temperature melting Cheng Rong is carried out in float glass smelting kiln
Liquid, for fusion temperature at 1600 DEG C, melt flows into work pool, clarifying and homogenizing temperature after clarifying and homogenizing in the float glass smelting kiln
Degree is 1680 DEG C, and melt enters in molding molten tin bath from the chute in work pool, forms band-like continuous glass sheets, band-like continuous glass
Plate forming temperature in molten tin bath is 900 DEG C；Band-like continuous glass sheets are annealed, are cut into transparent float glass.Clear float
Molybdenum element in glass, rhenium element, cadmium element, Ce elements, samarium element and gadolinium element total content be transparent float glass quality
0.0000089Wt%；The visible transmission ratio of transparent float glass (with a thickness of 6mm) is 87.2%, transparent float glass per ton
In bubble number be 20~25.
Embodiment 2
Devitrified glass fragment is cleaned to be sent into crusher after drying with dispenser and is crushed, ball in ball mill is re-fed into
It is milled into the microcrystalline glass powder that partial size is less than 0.5mm；Wherein, the composition and weight percent of the microcrystalline glass powder are as follows: SiO2
Content is the 59Wt%, Al of microcrystalline glass powder quality2O3Content is the 7Wt%, B of microcrystalline glass powder quality2O3Content is crystallite glass
The 1Wt% of glass silty amount, CaO content are the 17Wt% of microcrystalline glass powder quality, and ZnO content is microcrystalline glass powder quality
6.5Wt%, BaO content are the 4Wt%, Na of microcrystalline glass powder quality2O content is the 3.3Wt%, K of microcrystalline glass powder quality2O contains
Amount is the 2Wt%, Fe of microcrystalline glass powder quality2O3Content is the 0.2Wt% of microcrystalline glass powder quality.
Weigh 5.3Kg molybdenum trioxide, 2.5Kg rhenium dioxide, 3.9Kg cadmium oxide, 13.5Kg ceria, tri- oxygen of 8.1Kg
Change two samariums, 5.5Kg gadolinium sesquioxide, is mixed and compound complementary color agent is uniformly made.
Weigh 6391.1Kg quartz sand, 81.6Kg aluminium oxide, 1846.5Kg soda ash, 1214.3Kg calcium carbonate, 655.2Kg carbon
The compound complementary color agent of sour magnesium, 976Kg microcrystalline glass powder, 33.2Kg potassium nitrate, 0.896Kg, is sufficiently mixed, obtains batch；Its
In, SiO in the quartz sand2Content is the 92.7Wt% of quartz sand quality, Fe in quartz sand2O3Content is quartz sand quality
0.013Wt%.Uniformly mixed batch is sent into float glass smelting kiln, high temperature melting Cheng Rong is carried out in float glass smelting kiln
Liquid, for fusion temperature at 1606 DEG C, melt flows into work pool, clarifying and homogenizing temperature after clarifying and homogenizing in the float glass smelting kiln
Degree is 1687 DEG C, and melt enters in molding molten tin bath from the chute in work pool, forms band-like continuous glass sheets, band-like continuous glass
Plate forming temperature in molten tin bath is 903 DEG C；Band-like continuous glass sheets are annealed, are cut into transparent float glass.Clear float
Molybdenum element in glass, rhenium element, cadmium element, Ce elements, samarium element and gadolinium element total content be transparent float glass quality
0.0000093Wt%；The visible transmission ratio of transparent float glass (with a thickness of 6mm) is 89.1%, transparent float glass per ton
In bubble number be 23~29.
Embodiment 3
Devitrified glass fragment is cleaned to be sent into crusher after drying with dispenser and is crushed, ball in ball mill is re-fed into
It is milled into the microcrystalline glass powder that partial size is less than 0.5mm；Wherein, the composition and weight percent of the microcrystalline glass powder are as follows: SiO2
Content is the 59Wt%, Al of microcrystalline glass powder quality2O3Content is the 7Wt%, B of microcrystalline glass powder quality2O3Content is crystallite glass
The 1Wt% of glass silty amount, CaO content are the 17Wt% of microcrystalline glass powder quality, and ZnO content is microcrystalline glass powder quality
6.5Wt%, BaO content are the 4Wt%, Na of microcrystalline glass powder quality2O content is the 3.3Wt%, K of microcrystalline glass powder quality2O contains
Amount is the 2Wt%, Fe of microcrystalline glass powder quality2O3Content is the 0.2Wt% of microcrystalline glass powder quality.
Weigh 5.7Kg molybdenum trioxide, 2.8Kg rhenium dioxide, 4.1Kg cadmium oxide, 13.9Kg ceria, tri- oxygen of 8.6Kg
Change two samariums, 5.8Kg gadolinium sesquioxide, is mixed and compound complementary color agent is uniformly made.
Weigh 6444.4Kg quartz sand, 87.2Kg aluminium oxide, 1914.8Kg soda ash, 1314.3Kg calcium carbonate, 688.8Kg carbon
The compound complementary color agent of sour magnesium, 1018Kg microcrystalline glass powder, 35.6Kg potassium nitrate, 0.92Kg, is sufficiently mixed, obtains batch；Its
In, SiO in the quartz sand2Content is the 92Wt% of quartz sand quality, Fe in quartz sand2O3Content is quartz sand quality
0.02Wt%.Uniformly mixed batch is sent into float glass smelting kiln, high temperature melting Cheng Rong is carried out in float glass smelting kiln
Liquid, for fusion temperature at 1610 DEG C, melt flows into work pool, clarifying and homogenizing temperature after clarifying and homogenizing in the float glass smelting kiln
Degree is 1690 DEG C, and melt enters in molding molten tin bath from the chute in work pool, forms band-like continuous glass sheets, band-like continuous glass
Plate forming temperature in molten tin bath is 910 DEG C；Band-like continuous glass sheets are annealed, are cut into transparent float glass.Clear float
Molybdenum element in glass, rhenium element, cadmium element, Ce elements, samarium element and gadolinium element total content be transparent float glass quality
0.0000097Wt%；The visible transmission ratio of transparent float glass (with a thickness of 6mm) is 88.7%, transparent float glass per ton
In bubble number be 13~18.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (3)
1. transparent float glass production method, it is characterised in that the following steps are included:
Step 1: devitrified glass fragment processing
Devitrified glass fragment is cleaned to be sent into crusher after drying with dispenser and is crushed, ball milling system in ball mill is re-fed into
It is less than the microcrystalline glass powder of 0.5mm at partial size；
Step 2: mixing
By quartz sand, aluminium oxide, soda ash, calcium carbonate, magnesium carbonate, microcrystalline glass powder, potassium nitrate, compound complementary color agent according to recipe ratio
Example weighs each component, and each component is sufficiently mixed, batch is obtained；Wherein, the quartz sand in the batch, aluminium oxide, soda ash,
Calcium carbonate, magnesium carbonate, microcrystalline glass powder, potassium nitrate, compound complementary color agent proportion be the quality of quartz sand: the quality of aluminium oxide:
The quality of soda ash: the quality of calcium carbonate: the quality of magnesium carbonate: the quality of microcrystalline glass powder: the quality of potassium nitrate: compound complementary color agent
Quality=(6355.6~6444.4): (64.8~87.2): (1778.1~1914.8): (1157.1~1314.3):
(621.6~688.8): (942~1018): (31.1~35.6): (0.876~0.92)；
The compound complementary color agent is by molybdenum trioxide, rhenium dioxide, cadmium oxide, ceria, samarium sesquioxide and gadolinium sesquioxide
It is uniformly mixed and is made, wherein the quality of molybdenum trioxide: the quality of rhenium dioxide: the quality of cadmium oxide: the quality of ceria:
The quality of samarium sesquioxide: the quality of gadolinium sesquioxide=(4.9~5.7): (2.1~2.8): (3.7~4.1): (12.6~
13.9): (7.7~8.6): (5.2~5.8)；
Step 3: molding is melted
Uniformly mixed batch is sent into float glass smelting kiln, high temperature melting is carried out in float glass smelting kiln into melt, institute
Stating fusion temperature in float glass smelting kiln, at 1600~1610 DEG C, melt flows into work pool, clarifying and homogenizing after clarifying and homogenizing
Temperature is 1680~1690 DEG C, and melt enters in molding molten tin bath from the chute in work pool, forms band-like continuous glass sheets, band-like
Continuous glass sheets forming temperature in molten tin bath is 900~910 DEG C；Band-like continuous glass sheets are annealed, are cut into clear float
Glass.
2. transparent float glass production method according to claim 1, it is characterised in that: the composition of the microcrystalline glass powder
And weight percent are as follows: SiO2Content is the 59Wt%, Al of microcrystalline glass powder quality2O3Content is microcrystalline glass powder quality
7Wt%, B2O3Content is the 1Wt% of microcrystalline glass powder quality, and CaO content is the 17Wt% of microcrystalline glass powder quality, ZnO content
For the 6.5Wt% of microcrystalline glass powder quality, BaO content is the 4Wt%, Na of microcrystalline glass powder quality2O content is microcrystalline glass powder
The 3.3Wt% of quality, K2O content is the 2Wt%, Fe of microcrystalline glass powder quality2O3Content is microcrystalline glass powder quality
0.2Wt%.
3. transparent float glass production method according to claim 1, it is characterised in that: SiO in the quartz sand2Content
For 92~93Wt% of quartz sand quality, Fe in quartz sand2O3Content is 0.01~0.02Wt% of quartz sand quality.
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| CN106966585A (en) * | 2017-03-29 | 2017-07-21 | 合肥天沃能源科技有限公司 | A kind of energy-saving glass and preparation method thereof |
| CN107056020A (en) * | 2017-06-13 | 2017-08-18 | 合肥钢骨玻璃制品有限公司 | A kind of preparation method of safety glass |
| CN110759632A (en) * | 2019-09-09 | 2020-02-07 | 山东信和光热有限公司 | High-borosilicate glass formula with high transparency |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269909A (en) * | 2008-05-13 | 2008-09-24 | 中国建筑材料科学研究总院 | Float glass |
| CN102219376A (en) * | 2011-04-16 | 2011-10-19 | 浙江晶兴太阳能科技有限公司 | Preparation method of solar ultrawhite ultrathin glass and product thereof |
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2016
- 2016-05-19 CN CN201610334716.4A patent/CN106007371B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269909A (en) * | 2008-05-13 | 2008-09-24 | 中国建筑材料科学研究总院 | Float glass |
| CN102219376A (en) * | 2011-04-16 | 2011-10-19 | 浙江晶兴太阳能科技有限公司 | Preparation method of solar ultrawhite ultrathin glass and product thereof |
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